diff --git a/package.xml b/package.xml
index 54503abba..bc839a3df 100644
--- a/package.xml
+++ b/package.xml
@@ -6,8 +6,17 @@
   <description>gtsam</description>
 
   <maintainer email="gtsam@lists.gatech.edu">Frank Dellaert</maintainer>
+
+  <!-- Main License for GTSAM sources -->
   <license>BSD</license>
-  
+  <!-- 3rd party libraries -->
+  <license file="gtsam/3rdparty/CCOLAMD/Doc/License.txt">BSD</license>
+  <license file="gtsam/3rdparty/ceres/jet.h">BSD</license>
+  <license file="gtsam/3rdparty/Eigen/COPYING.README">MPL2</license>
+  <license file="gtsam/3rdparty/GeographicLib/LICENSE.txt">MIT</license>
+  <license file="gtsam/3rdparty/metis/LICENSE.txt">Apache-2.0</license>
+  <license file="gtsam/3rdparty/Spectra/GenEigsSolver.h">MPL2</license>
+
   <!-- Maintainers of the ROS packaging -->
   <maintainer email="fan.jiang@gatech.edu">Fan Jiang</maintainer>
   <maintainer email="jlblanco@ual.es">José Luis Blanco-Claraco</maintainer>